Respuesta :
We will use the method of elimination:
2 x - y = 6 / · 10 ( multiply by 10 )
5 x + 10 y = -10
______________
20 x - 10 y = 60
+
5 x + 10 y = - 10
_______________
25 x = 50
x = 50 : 25
x = 2
2 x - y = 6 / · 10 ( multiply by 10 )
5 x + 10 y = -10
______________
20 x - 10 y = 60
+
5 x + 10 y = - 10
_______________
25 x = 50
x = 50 : 25
x = 2